Food fads come and go. Some are good -- hello, Cronut! Some are everlasting -- bacon on everything! And some are just WTF -- flavored infused foams? Why, Ferran Adria, why? The latest craze sweeping across the country falls squarely into the last category. Yes, I mean “bone broth.”

Can You Guess Alton Brown’s Secret Christmas Ingredient?

Take your minds out of the gutter for this brain tease: Alton Browntweeted out this potent secret ingredient this morning and asked if anyone could guess its identity, leaving a majority of fans puzzled (and feeling a little ashamed for leaping to some NSFW conclusions about it).

Can you figure out what this is? Leave your answers below!

ANSWER (highlight to read): Horseradish. Negative points for you if you still thought it was a penis.